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arXiv 2408.03371astro-ph.SRastro-ph.COastro-ph.GA
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有价值的长周期星团造父变星 KQ Scorpii 及其他校准候选体

The Valuable Long-period Cluster Cepheid KQ Scorpii and other Calibration Candidates

Daniel Majaess, David G. Turner, Dante Minniti, Javier Alonso-Garcia, Roberto K. Saito

AI总结:

本文研究了长周期星团造父变星 KQ Sco 作为距离标度锚点的价值,通过多源数据综合分析确定其距离,并提出维护星团造父变星数据库以促进国际共识。

摘要:

经典造父变星 KQ Sco 因其长脉动周期($28^{\rm d}.7$)及属于疏散星团 UBC 1558 的证据,成为距离标度的重要锚点。结合 Gaia DR3 天体测量、测光、光谱、视向速度及 2MASS-VVV 测光的分析表明,其共同距离为 $2.15\pm0.15$ kpc(已应用 \citealt{lin21} DR3 校正)。研究还确定了需后续跟进的额外星团造父变星候选体,并建议国际研究团队维护星团造父变星数据库,以引导更广泛社群达成共识。

英文摘要:

The classical Cepheid KQ Sco is a valuable anchor for the distance scale because of its long pulsation period ($28^{\rm d}.7$) and evidence implying membership in the open cluster UBC 1558. Analyses tied to Gaia DR3 astrometry, photometry, spectroscopy, radial velocities, and 2MASS-VVV photometry indicate a common distance of $2.15\pm0.15$ kpc (\citealt{lin21} DR3 corrections applied). Additional cluster Cepheid candidates requiring follow-up are identified, and it's suggested that a team of international researchers could maintain a cluster Cepheid database to guide the broader community to cases where consensus exists.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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